I live in London with DH, the rest of my family live in Scotland. In the entire time I've lived here, only my sister has ever been to visit (my parents don't travel, for valid reasons) - my brother's never been, and I always assumed it was because he has young kids and holidays are spent doing kids stuff, or it's a bit too expensive for them all to come and pay for hotels etc. When DH and I got a house I said they should come stay as we had space - not happened yet.
Brother came down to go to the Army v Navy rugby at Twickenham with SIL and her brother and his wife on Saturday, leaving their kids with the ILs. I thought it would be nice to see them, but assumed if they were with a group at the rugby that it probably wouldn't fit and they'd have to head back north early Sunday to get the kids. I didn't hear anything from them suggesting that we meet up, so guessed that I'd been right and they didn't have time, only to discover they've spent today touristing round London.
We don't see each other very often due to living at opposite ends of the country, and he's a good bit older than me, but I always thought we got on ok. I wouldn't dream of coming to the city one of my siblings lived in and not bothering to get in touch to have a drink, or lunch, or even just a coffee. So AIBU to be a bit hurt that it doesn't appear to have crossed their minds that his sister lives in London and might like to see them?